Re: Definitely a bug in locking.

[Mark Burgess]

I cannot figure out what, if anything, is wrong here, Sorry to be slow.
 
Can you make sure that we are talking about the same thing by trying the
version currently in the subversion repository or snapshot. (e.g. send
me the bit of code that you think is wrong) and explain exactly the
symptoms. The debug output here tells me nothing because I don't know
what I'm looking for.

Thanks

M

On Fri, 2005-03-18 at 09:43 -0500, Baker, Darryl wrote:
> One of my co-workers dug in a bit deeper into our problems last night and
> found:
> 
> Solaris 8 and 9 on SPARC using a few days old snap-shot. Berkeley DB=3.3 
> 
> I ran cfagent in all-out debug mode (-d2)  on asgqd545 and noticed from the
> trace below. This was repeated for all of the 'copy' actions that should
> have occurred. Note the 'IfElapsed' parameter to GetLock. Now note the third
> line. I dug up the doc on IfElapsed, and discovered that it is intended to
> assure that cfengine can't run off and insanely start copying everything at
> full tilt. I set "IfElapsed = ( 0 )" in cf.main and the file copies went
> right through. 
> 
> I have managed to prove that my C is hopelessly rusty, but I'm 99% certain
> that the bug is somewhere in lines 212-257 of locks.c. I know that because
> the variable 'operand' goes null in there somehow (!) and results in that
> third line of debug not having what it should. (Line 212 sets the first
> line, 257 sets the last, and 'operand' goes missing in there.... just
> wrong...) 
> 
> 
> 
> ExpandVarstring(sysadm05.abh.vw.com)
> ExpandVarstring(/var/cfengine/master/etc/sudoers)
> ExpandVarstring(/usr/local/etc/sudoers)
> Checking copy from sysadm05.abh.vw.com:/var/cfengine/master/etc/sudoers to
> /usr/local/etc/sudoers
> ExpandVarstring(sysadm05.abh.vw.com)
> Server connection to sysadm05.abh.vw.com already open on 4
> Authentic connection verified
> cf_rstat(/var/cfengine/master/etc/sudoers)
> GetCachedStatData(/var/cfengine/master/etc/sudoers)
> Did not find in cache
> Transaction Send[t 54][Packed text]
> Attempting to send 62 bytes
> SendSocketStream, sent 62
> RecvSocketStream(8)
>     (Concatenated 8 from stream)
> Transaction Receive [t 74][]
> RecvSocketStream(74)
>     (Concatenated 74 from stream)
> Mode = 288,0
> OK: type=0
>  mode=440
>  lmode=0
>  uid=0
>  gid=0
>  size=22418
>  atime=1111154948
>  mtime=1111103746 ino=281856 nlnk=1, dev=22282242
> RecvSocketStream(8)
>     (Concatenated 8 from stream)
> Transaction Receive [t 3][]
> RecvSocketStream(3)
>     (Concatenated 3 from stream)
> Linkbuffer: OK:
> GetLock(copy,_var_cfengine_master_etc_sudoers__usr_local_etc_sudoers_sysadm0
> 5_abh_vw_com,time=1111156198), ExpireAfter=60, IfElapsed=1
> GetLastLock()
> cfengine:asgqd545: Nothing scheduled for copy. (0/1 minutes elapsed)
> 
> _____________________________________________________________________
> Darryl Baker
> gedas USA, Inc.
> Operational Services Business Unit
> 3800 Hamlin Road
> Auburn Hills, MI 48326
> US
> phone +1-248-754-5341
> fax   +1-248-754-6399
> address@hidden
> http://www.gedasusa.com
> _____________________________________________________________________
>  
> >  
>  <<Baker, Darryl.vcf>> 
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